Stomatal density and stomatal length in relation to photosynthetic and transpirational behaviour of paddy rice varieties and their yield, and yield components.

气孔密度和气孔长度与水稻品种光合和蒸腾行为及其产量和产量构成的关系。

• 批准号: 60480035
• 负责人: JODO Shuichiro
• 金额: $ 4.1万
• 依托单位: Ehime University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1985
• 资助国家: 日本
• 起止时间: 1985 至 1986
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-60480035/
• 关键词: Rice variety; Photosynthesis; Transpiration; Stomatal conductance; Stomatal density; Stomatal length; Yield components; 携帯型分析計

Fifteen varieties of paddy rice (Oryza sativa L. subsp. japonica and subsp. indica) including different plant types were chosen from current and past recommended varieties in Ehime prefecture and from super high yield varieties. Photosynthetic and transpiration rates of flag leaves were measured hourly for several days from heading through ripening periods using a portable gas analyzer (Analytical Development Co. Ltd., England). Stomatal density( <mm^(-2)> ) and stomatal length ( <mu> ) were examined with enamel repricas of abaxial and adaxial sides of the flag leaf. The leaf area, yield and yield components were also investigated.1. Varietal difference of net photosynthetic rate was clearly indicated on a fine day, although the difference disappeared when clouds arouse around at noon even in a few hours.2. Many varieties showed their maximum photosynthesis at 10-12 a.m. In some varieties, however, the maximum occurred at 8-9 a.m. and 2 p.m. independently of solar radiation intensities … More .3. A high correlation coefficient r= <0.783^(***)> was observed between varietal photosynthetic rates and varietal stomatal conductances on a fine day.4. Relations between stomatal conductance and stomatal density X stomatal length were investigated in each hour. Strong correlations were generally recognized, but they disappeared at hours when solar radiation exhibited very high intensities. The author considered that the potential stomatal conductance of varieties was essentially related with their stomatal density X stomatal length. Therefore, the correlation was weakened by stomatal closure of varieties which developed water stress.5. Super high yield Korean varieties had very many stomata,ranging from 5.6 to 7.1 millions per flag leaf in number. This number was 2-2.5 times as large as that of Japanese common varieties. Total stomatal length (= number of stomata X stomatal length) of the flag leaf was severely correlated with number of grains per head (r= <0.784^(***)> ), and with yield (r= <0.694^(**)> ). Less

从当前和过去的推荐变化中选择了15种稻米（Oryza sativa L. sativa L. sidiva L.subsp。Japonica和subsp。Indica），包括ehime的当前和过去推荐的变化，并从超高的产量变化中选择。使用便携式气体分析仪（分析开发有限公司，英格兰），每小时测量旗叶的光合作用和蒸腾率。用旗叶的浅层和轴向侧的搪瓷复制检查，检查了气孔密度（<mm^（-2）>）和气孔长度（<mu>）。还研究了叶面积，产量和产量成分。1。净光合速率的品种差异在美好的一天中清楚地表明，尽管即使在几个小时内云中笼罩在中午，云也消失了。2。许多品种在上午10-12时显示出最大的光合作用，但是，最大值发生在上午8-9点和下午2点。独立于太阳辐射强度……更多.3。在良好的一天中观察到高相关系数r = <0.783^（***）>光合速率和品种的气孔电导。4。每小时研究气孔电导与气孔密度X气孔长度之间的关系。通常认识到强相关性，但是当太阳辐射暴露出很高的强度时，它们在数小时消失了。作者认为，品种的潜在气孔电导与它们的气孔密度X肌张力长度基本相关。因此，通过发展水应力的品种闭合且相关性削弱了。5。超高收益韩国品种的气孔很多，每个国旗叶的数量为5.6至71亿。这个数字是日本普通品种的2-2.5倍。标志叶的总stomato长度（=气孔x stomato长度）与每头谷物数（r = <0.784^（**）>）严重相关，并且产量（r = <0.694^（**）>）。较少的

项目成果

JODO, Shuichiro: "Stomatal Density and Stomatal Length in Relation to Photosynthetic and Transpirational Behaviour of Paddy Rice Varieties and Their Yield, and Yield Components." Japanese Jour. Crop Sci.56. in preparation (1987)

JODO，Shuichiro：“气孔密度和气孔长度与水稻品种光合和蒸腾行为及其产量和产量组成的关系。”

上堂秀一郎: 愛媛大学農学部紀要. 31. 1-130 (1986)

上户秀一郎：爱媛大学农学部通报，31. 1-130 (1986)。

上堂秀一郎: 日本作物学会紀事. 56. (1987)

Shuichiro Kamido：日本作物科学学会杂志 56。（1987）

JODO, Shuichiro: "Eco-Physiological Studies on Crop Water Relations and Stomatal Characteristics" Mem. Coll. Agr., Ehime University. 31. 1-130 (1986)

JODO，Shuichiro：“作物水分关系和气孔特征的生态生理学研究”Mem。